an example of a legit fear you might be drowned, in a train car. The flash flood in Madrid this past weekend caused this

A group of commuters aboard a rail line in Madrid saw their train car suddenly flood with water as a record torrential rain swept across Spain from Sunday to Monday.

Shocking footage from inside a metro line shows riders backing away from the door connecting the train cars as floodwaters seeped through the cracks.

The worried passengers could be seen filming the flood, with the downpour visible through the train windows, making it seem like the train was stuck in a waterfall.

City officials said the flash flooding began on Sunday

https://www.tumblr.com/periperico59/727551743617122304?source=share
https://nypost.com/2023/09/04/moment-madrid-commuters-are-caught-in-flooded-metro/